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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 $5,650 CAD
HK$31,600 HKD
As of October 30, 2026
Save $7,185 CAD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,835 CAD 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 $5,650 to $12,835, a $7,185 spread on the same certified stone. Queensmith lists it at $12,835. 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
Color
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: Oct 30
Current: $12,835 CAD|Low: $6,043 CAD|High: $12,880 CAD|Avg: $8,773 CAD|+2.0%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2$6,080 CAD
Retailer 6$6,664 CAD
Retailer 7$7,012 CAD
Retailer 3$7,364 CAD
Retailer 4$8,620 CAD
Retailer 5$12,165 CAD
Queensmith$12,835 CAD

34 data points across 7 retailers

19 retailers$5,650 CAD to $12,835 CAD

A
Cheapest Retailer
-
$5,650 CAD
HK$31,600 HKD
A
Retailer 2
-
$6,080 CAD
₹414,515 INR
View
A
Retailer 3
-
$6,664 CAD
SGD 6,447 SGD
View
A
Retailer 4
-
$6,929 CAD
$4,960 USD
View
A
Retailer 5
-
$7,012 CAD
$5,020 USD
View
Final sale: no returns
A
Retailer 6
-
$7,243 CAD
SGD 7,007 SGD
View
A
Retailer 7
-
$7,280 CAD
A$8,018 AUD
View
A
Retailer 8
-
$7,364 CAD
£4,151 GBP
View
B+
Retailer 9
-
$7,515 CAD
$5,380 USD
View
Retailer 10
-
$7,598 CAD
$5,439 USD
View
Price last confirmed 23 days ago
Retailer 11
-
$7,598 CAD
$5,439 USD
View
Price last confirmed 23 days ago
Retailer 12
-
$7,598 CAD
$5,439 USD
View
Price last confirmed 32 days ago
Retailer 13
-
$7,598 CAD
$5,439 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$7,812 CAD
$5,592 USD
View
B+
Retailer 15
-
$8,620 CAD
€5,877 EUR
View
Retailer 16
-
$8,766 CAD
$6,275 USD
View
Price last confirmed 31 days ago
B
Retailer 17
-
$12,165 CAD
£6,857 GBP
View
Retailer 18
-
$12,708 CAD
$9,097 USD
View
Price last confirmed 32 days ago
Most Expensive
B
Queensmith
2557742093 · Oct 28
$12,835 CAD
£7,235 GBP
View
18 more retailers have this diamond
Prices start from $5,650 CADSave up to $7,185 CAD

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
$5,650 CAD