CaratHunter
Plans
Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 2556755740

Certificate GIA 2556755740

Diamond specifications and retailer prices

From $6,399 AUD
$4,495 USD
As of November 1, 2026
Save $6,134 AUD (49%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $12,533 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556755740. Listed at 26 retailers as of October 29, 2026, with prices from $6,399 to $12,533, a $6,134 spread on the same certified stone. MOH London lists it at $12,533. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556755740
Dimensions8.77 × 6.26 × 3.93 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Knot, Crystal, Feather, Indented Natural, Needle
Top View
8.77 mm6.26 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556755740
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $12,533 AUD|Low: $6,610 AUD|High: $12,634 AUD|Avg: $8,588 AUD|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 2, 2026
Retailer 11$6,610 AUD
Retailer 9$6,685 AUD
Retailer 24$6,686 AUD
Retailer 12$6,770 AUD
Retailer 10$7,075 AUD
Retailer 6$7,182 AUD
Retailer 8$7,580 AUD
Retailer 7$7,666 AUD
Retailer 19$7,666 AUD
Retailer 23$7,763 AUD
Retailer 22$7,800 AUD
Retailer 17$7,850 AUD
Retailer 15$8,032 AUD
Retailer 2$8,141 AUD
Retailer 18$8,254 AUD
Retailer 4$8,570 AUD
Retailer 14$8,570 AUD
Retailer 16$8,677 AUD
Retailer 21$8,845 AUD
Retailer 5$8,855 AUD
Retailer 13$9,036 AUD
Retailer 20$10,396 AUD
Retailer 3$12,258 AUD
MOH London$12,533 AUD

34 data points across 24 retailers

26 retailers$6,399 AUD to $12,533 AUD

B+
Cheapest Retailer
-
$6,399 AUD
$4,495 USD
B+
Retailer 2
-
$6,610 AUD
$4,643 USD
View
B+
Retailer 3
-
$6,685 AUD
$4,696 USD
View
B+
Retailer 4
-
$6,686 AUD
$4,697 USD
View
B+
Retailer 5
-
$6,770 AUD
$4,755 USD
View
B+
Retailer 6
-
$6,965 AUD
View
B+
Retailer 7
-
$6,987 AUD
$4,908 USD
View
B+
Retailer 8
-
$7,075 AUD
$4,970 USD
View
Final sale: no returns
B+
Retailer 9
-
$7,182 AUD
$5,045 USD
View
B
Retailer 10
-
$7,580 AUD
$5,325 USD
View
B+
Retailer 11
-
$7,666 AUD
$5,385 USD
View
B
Retailer 12
-
$7,666 AUD
$5,385 USD
View
B
Retailer 13
-
$7,800 AUD
$5,479 USD
View
Retailer 14
-
$7,850 AUD
View
Price last confirmed 23 days ago
B
Retailer 15
-
$8,032 AUD
$5,642 USD
View
B+
Retailer 16
-
$8,141 AUD
£4,503 GBP
View
B
Retailer 17
-
$8,254 AUD
£4,565 GBP
View
B
Retailer 18
-
$8,570 AUD
$6,020 USD
View
B
Retailer 19
-
$8,570 AUD
$6,020 USD
View
B
Retailer 20
-
$8,677 AUD
$6,095 USD
View
B
Retailer 21
-
$8,845 AUD
$6,213 USD
View
B
Retailer 22
-
$8,855 AUD
$6,220 USD
View
B
Retailer 23
-
$9,036 AUD
€6,045 EUR
View
B
Retailer 24
-
$10,396 AUD
ZAR 117,978 ZAR
View
B
Retailer 25
-
$12,258 AUD
$8,611 USD
View
Most Expensive
B
MOH London
23DAD2790 · Oct 29
$12,533 AUD
£6,932 GBP
View
25 more retailers have this diamond
Prices start from $6,399 AUDSave up to $6,134 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Oval
$6,399 AUD