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Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1169911515

Certificate GIA 1169911515

Diamond specifications and retailer prices

From $16,300 AUD
$11,450 USD
As of October 28, 2026
Save $12,613 AUD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $28,913 AUD at MOH London · As of November 1, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1169911515. Listed at 19 retailers as of October 28, 2026, with prices from $16,300 to $28,913, a $12,613 spread on the same certified stone. MOH London lists it at $28,913. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1169911515
Dimensions8.79 × 6.58 × 4.09 mm
L/W Ratio1.34
Top View
8.79 mm6.58 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1169911515
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.2%

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: Oct 28
Current: $28,913 AUD|Low: $16,300 AUD|High: $29,260 AUD|Avg: $21,892 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7$16,300 AUD
Retailer 3$18,512 AUD
Retailer 8$19,747 AUD
Retailer 2$19,763 AUD
Retailer 6$19,880 AUD
Retailer 10$20,056 AUD
Retailer 9$20,827 AUD
Retailer 5$22,280 AUD
Retailer 11$26,226 AUD
Retailer 4$27,198 AUD
MOH London$28,913 AUD

43 data points across 11 retailers

19 retailers$16,300 AUD to $28,913 AUD

B+
Cheapest Retailer
-
$16,300 AUD
$11,450 USD
B
Retailer 2
-
$17,176 AUD
$12,065 USD
View
B
Retailer 3
-
$17,204 AUD
$12,085 USD
View
B
Retailer 4
-
$17,306 AUD
CA$16,884 CAD
View
B
Retailer 5
-
$18,201 AUD
$12,785 USD
View
B
Retailer 6
-
$18,512 AUD
$13,004 USD
View
B
Retailer 7
-
$19,747 AUD
$13,871 USD
View
B
Retailer 8
-
$19,763 AUD
£10,931 GBP
View
Retailer 9
-
$19,880 AUD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$20,056 AUD
$14,088 USD
View
B
Retailer 11
-
$20,827 AUD
$14,630 USD
View
B
Retailer 12
-
$21,197 AUD
$14,890 USD
View
B
Retailer 13
-
$21,197 AUD
$14,890 USD
View
B
Retailer 14
-
$21,461 AUD
$15,075 USD
View
B
Retailer 15
-
$21,909 AUD
$15,390 USD
View
B
Retailer 16
-
$22,280 AUD
€14,905 EUR
View
B
Retailer 17
-
$26,226 AUD
$18,422 USD
View
B
Retailer 18
-
$27,198 AUD
ZAR 308,639 ZAR
View
Most Expensive
B
MOH London
DE6A5FE04 · Nov 1
$28,913 AUD
£15,992 GBP
View
18 more retailers have this diamond
Prices start from $16,300 AUDSave up to $12,613 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
$16,300 AUD