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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5231835612

Certificate GIA 5231835612

Diamond specifications and retailer prices

From $5,808 AUD
HK$31,800 HKD
As of November 1, 2026
Save $6,482 AUD (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,290 AUD at MOH London · As of November 2, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231835612. Listed at 14 retailers as of November 1, 2026, with prices from $5,808 to $12,290, a $6,482 spread on the same certified stone. MOH London lists it at $12,290. 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5231835612
Dimensions7.28 × 7.31 × 4.54 mm
L/W Ratio1.00
Top View
7.28 mm7.31 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5231835612
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.3%

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: Nov 1
Current: $12,290 AUD|Low: $5,808 AUD|High: $12,727 AUD|Avg: $7,980 AUD|-3.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11$5,808 AUD
Retailer 10$6,096 AUD
Retailer 8$6,452 AUD
Retailer 12$6,627 AUD
Retailer 5$6,935 AUD
Retailer 7$7,005 AUD
Retailer 9$7,480 AUD
Retailer 4$7,799 AUD
Retailer 6$8,192 AUD
Retailer 2$8,699 AUD
Retailer 3$12,289 AUD
MOH London$12,290 AUD

26 data points across 12 retailers

14 retailers$5,808 AUD to $12,290 AUD

A
Cheapest Retailer
-
$5,808 AUD
HK$31,800 HKD
A
Retailer 2
-
$6,096 AUD
$4,272 USD
View
A
Retailer 3
-
$6,452 AUD
$4,522 USD
View
Final sale: no returns
A
Retailer 4
-
$6,627 AUD
$4,644 USD
View
A
Retailer 5
-
$6,935 AUD
$4,860 USD
View
A
Retailer 6
-
$7,005 AUD
$4,910 USD
View
A
Retailer 7
-
$7,480 AUD
£4,127 GBP
View
A
Retailer 8
-
$7,799 AUD
SGD 7,386 SGD
View
A
Retailer 9
-
$7,965 AUD
View
A
Retailer 10
-
$8,192 AUD
£4,521 GBP
View
A
Retailer 11
-
$8,699 AUD
€5,806 EUR
View
Retailer 12
-
$9,009 AUD
$6,314 USD
View
Price last confirmed 16 days ago
Retailer 13
-
$12,289 AUD
$8,612 USD
View
Price last confirmed 10 days ago
Most Expensive
B+
MOH London
16F4FA1BA · Nov 2
$12,290 AUD
£6,782 GBP
View
13 more retailers have this diamond
Prices start from $5,808 AUDSave up to $6,482 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
$5,808 AUD