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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6561487499

Certificate GIA 6561487499

Diamond specifications and retailer prices

From $4,822 AUD
$3,387 USD
As of October 31, 2026
Save $7,762 AUD (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,583 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6561487499. Listed at 19 retailers as of October 26, 2026, with prices from $4,822 to $12,583, a $7,762 spread on the same certified stone. MOH London lists it at $12,583. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6561487499
Dimensions7.48 × 7.45 × 4.47 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.48 mm7.45 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561487499
Side View
Table 59.0%Crown 32.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $12,583 AUD|Low: $4,822 AUD|High: $14,196 AUD|Avg: $8,490 AUD|-0.6%
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
November 2, 2026
Retailer 4$4,822 AUD
Retailer 18$5,189 AUD
Retailer 6$5,390 AUD
Retailer 14$5,868 AUD
Retailer 13$6,130 AUD
Retailer 10$6,285 AUD
Retailer 19$6,621 AUD
Retailer 2$6,739 AUD
Retailer 16$6,983 AUD
Retailer 7$7,310 AUD
Retailer 12$7,387 AUD
Retailer 3$7,707 AUD
Retailer 9$8,043 AUD
Retailer 5$9,041 AUD
Retailer 11$9,130 AUD
Retailer 15$9,410 AUD
Retailer 17$9,632 AUD
Retailer 8$11,927 AUD
MOH London$12,583 AUD

22 data points across 19 retailers

19 retailers$4,822 AUD to $12,583 AUD

A
Cheapest Retailer
-
$4,822 AUD
$3,387 USD
A
Retailer 2
-
$5,189 AUD
$3,645 USD
View
A
Retailer 3
-
$5,390 AUD
$3,786 USD
View
A
Retailer 4
-
$5,868 AUD
HK$32,200 HKD
View
A
Retailer 5
-
$6,130 AUD
$4,306 USD
View
Retailer 6
-
$6,285 AUD
$4,415 USD
View
Price last confirmed 15 days ago
A
Retailer 7
-
$6,621 AUD
$4,651 USD
View
A
Retailer 8
-
$6,739 AUD
$4,734 USD
View
Final sale: no returns
A
Retailer 9
-
$6,983 AUD
$4,905 USD
View
A
Retailer 10
-
$7,310 AUD
SGD 6,939 SGD
View
A
Retailer 11
-
$7,387 AUD
£4,086 GBP
View
A
Retailer 12
-
$7,707 AUD
$5,414 USD
View
A
Retailer 13
-
$8,043 AUD
$5,650 USD
View
B+
Retailer 14
-
$9,041 AUD
$6,351 USD
View
B+
Retailer 15
-
$9,410 AUD
$6,610 USD
View
B+
Retailer 16
-
$9,632 AUD
£5,328 GBP
View
B
Retailer 17
-
$11,927 AUD
$8,378 USD
View
Retailer 18
-
$12,050 AUD
$8,464 USD
View
Price last confirmed 13 days ago
Most Expensive
B
MOH London
651FA8153 · Oct 26
$12,583 AUD
£6,960 GBP
View
18 more retailers have this diamond
Prices start from $4,822 AUDSave up to $7,762 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.

A
1.51ct Round
$4,822 AUD