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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2557742093

Certificate GIA 2557742093

Diamond specifications and retailer prices

From $5,220 SGD
HK$31,900 HKD
As of November 1, 2026
Save $6,527 SGD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,747 SGD at Queensmith · As of October 28, 2026
View at Queensmith

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 2557742093. Listed at 19 retailers as of October 28, 2026, with prices from $5,220 to $11,747, a $6,527 spread on the same certified stone. Queensmith lists it at $11,747. 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 angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557742093
Dimensions7.28 × 7.34 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
7.28 mm7.34 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557742093
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: $11,747 SGD|Low: $5,220 SGD|High: $11,787 SGD|Avg: $7,887 SGD|+2.0%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 6$5,220 SGD
Retailer 2$5,544 SGD
Retailer 7$6,099 SGD
Retailer 8$6,418 SGD
Retailer 5$6,740 SGD
Retailer 4$7,835 SGD
Retailer 3$11,074 SGD
Queensmith$11,747 SGD

35 data points across 8 retailers

19 retailers$5,220 SGD to $11,747 SGD

A
Cheapest Retailer
-
$5,220 SGD
HK$31,900 HKD
A
Retailer 2
-
$5,544 SGD
₹412,987 INR
View
A
Retailer 3
-
$6,099 SGD
View
A
Retailer 4
-
$6,341 SGD
$4,960 USD
View
A
Retailer 5
-
$6,418 SGD
$5,020 USD
View
Final sale: no returns
A
Retailer 6
-
$6,629 SGD
View
A
Retailer 7
-
$6,663 SGD
A$8,018 AUD
View
A
Retailer 8
-
$6,740 SGD
£4,151 GBP
View
B+
Retailer 9
-
$6,878 SGD
$5,380 USD
View
Retailer 10
-
$6,953 SGD
$5,439 USD
View
Price last confirmed 24 days ago
Retailer 11
-
$6,953 SGD
$5,439 USD
View
Price last confirmed 24 days ago
Retailer 12
-
$6,953 SGD
$5,439 USD
View
Price last confirmed 33 days ago
Retailer 13
-
$6,953 SGD
$5,439 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
$7,149 SGD
$5,592 USD
View
B+
Retailer 15
-
$7,835 SGD
€5,837 EUR
View
Retailer 16
-
$8,022 SGD
$6,275 USD
View
Price last confirmed 32 days ago
B
Retailer 17
-
$11,074 SGD
£6,821 GBP
View
Retailer 18
-
$11,630 SGD
$9,097 USD
View
Price last confirmed 34 days ago
Most Expensive
B
Queensmith
2557742093 · Oct 28
$11,747 SGD
£7,235 GBP
View
18 more retailers have this diamond
Prices start from $5,220 SGDSave up to $6,527 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
$5,220 SGD