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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 1538258148

Certificate GIA 1538258148

Diamond specifications and retailer prices

From $5,795 SGD
HK$35,400 HKD
As of November 1, 2026
Save $6,452 SGD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,648 SGD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

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 1538258148. Listed at 21 retailers as of October 28, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1538258148
Dimensions7.35 × 7.29 × 4.59 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.35 mm7.29 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1538258148
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: $6,158 SGD|Low: $5,746 SGD|High: $12,295 SGD|Avg: $8,127 SGD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 10$5,795 SGD
Retailer 1$6,158 SGD
Retailer 13$6,603 SGD
Retailer 2$6,643 SGD
Retailer 11$6,785 SGD
Retailer 5$6,980 SGD
Retailer 7$7,328 SGD
Retailer 3$7,456 SGD
Retailer 4$7,761 SGD
Retailer 6$8,028 SGD
Retailer 8$8,226 SGD
Retailer 9$11,140 SGD
Retailer 12$12,246 SGD

30 data points across 13 retailers

21 retailers$5,795 SGD to $12,246 SGD

A
Cheapest Retailer
-
$5,795 SGD
HK$35,400 HKD
A
Retailer 2
-
$6,158 SGD
₹458,610 INR
View
A
Retailer 3
-
$6,603 SGD
View
A
Retailer 4
-
$6,643 SGD
$5,194 USD
View
A
Retailer 5
-
$6,785 SGD
$5,305 USD
View
Retailer 6
-
$6,851 SGD
$5,357 USD
View
Price last confirmed 17 days ago
Retailer 7
-
$6,851 SGD
$5,357 USD
View
Price last confirmed 34 days ago
Retailer 8
-
$6,851 SGD
$5,357 USD
View
Price last confirmed 34 days ago
A
Retailer 9
-
$6,980 SGD
$5,458 USD
View
Final sale: no returns
A
Retailer 10
-
$7,045 SGD
$5,509 USD
View
A
Retailer 11
-
$7,328 SGD
£4,512 GBP
View
A
Retailer 12
-
$7,456 SGD
$5,830 USD
View
A
Retailer 13
-
$7,761 SGD
$6,069 USD
View
Retailer 14
-
$7,905 SGD
$6,181 USD
View
Price last confirmed 34 days ago
A
Retailer 15
-
$8,028 SGD
£4,943 GBP
View
A
Retailer 16
-
$8,226 SGD
€6,126 EUR
View
Retailer 17
-
$8,340 SGD
$6,521 USD
View
Price last confirmed 10 days ago
B+
Retailer 18
-
$11,140 SGD
£6,859 GBP
View
B+
Retailer 19
-
$12,246 SGD
£7,540 GBP
View
Retailer 20
-
$12,648 SGD
$9,890 USD
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
f4f1a7a0-c163-4cbe-a534-8e0fa0e569e3 · Oct 17
$12,648 SGD
$9,890 USD
View
Price last confirmed 16 days ago
20 more retailers have this diamond
Prices start from $5,795 SGDSave up to $6,452 SGD

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
$5,795 SGD