CaratHunter
Plans
Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 1543580785

Certificate GIA 1543580785

Diamond specifications and retailer prices

From $3,945 SGD
HK$24,100 HKD
As of November 2, 2026
Save $6,369 SGD (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,314 SGD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural heart diamond

This 1.51ct natural heart 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 stated by the retailer rather than the lab and certified by GIA 1543580785. Listed at 17 retailers as of October 28, 2026, with prices from $3,945 to $10,314, a $6,369 spread on the same certified stone. Queensmith lists it at $10,314. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543580785
Dimensions7.05 × 8.02 × 4.63 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Needle, Indented Natural
Top View
7.05 mm8.02 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543580785
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.8%

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 2
Current: $10,314 SGD|Low: $3,945 SGD|High: $10,590 SGD|Avg: $6,048 SGD|-2.6%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$3,945 SGD
Retailer 4$4,204 SGD
Retailer 7$4,774 SGD
Retailer 10$5,008 SGD
Retailer 9$5,160 SGD
Retailer 8$5,291 SGD
Retailer 6$5,361 SGD
Retailer 3$5,384 SGD
Retailer 2$8,651 SGD
Queensmith$10,314 SGD

36 data points across 10 retailers

17 retailers$3,945 SGD to $10,314 SGD

A
Cheapest Retailer
-
$3,945 SGD
HK$24,100 HKD
A
Retailer 2
-
$4,204 SGD
₹313,082 INR
View
A
Retailer 3
-
$4,774 SGD
$3,733 USD
View
Final sale: no returns
Retailer 4
-
$5,008 SGD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$5,160 SGD
View
A
Retailer 6
-
$5,291 SGD
£3,258 GBP
View
B+
Retailer 7
-
$5,361 SGD
$4,192 USD
View
B+
Retailer 8
-
$5,364 SGD
$4,194 USD
View
B+
Retailer 9
-
$5,384 SGD
$4,210 USD
View
B+
Retailer 10
-
$5,684 SGD
A$6,838 AUD
View
Retailer 11
-
$5,828 SGD
$4,557 USD
View
Price last confirmed 26 days ago
Retailer 12
-
$5,828 SGD
$4,557 USD
View
Price last confirmed 33 days ago
Retailer 13
-
$5,828 SGD
$4,557 USD
View
Price last confirmed 26 days ago
Retailer 14
-
$6,724 SGD
$5,258 USD
View
Price last confirmed 35 days ago
B
Retailer 15
-
$8,651 SGD
£5,326 GBP
View
Retailer 16
-
$10,154 SGD
$7,940 USD
View
Price last confirmed 33 days ago
Most Expensive
B
Queensmith
1543580785 · Oct 28
$10,314 SGD
£6,350 GBP
View
16 more retailers have this diamond
Prices start from $3,945 SGDSave up to $6,369 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 Heart
$3,945 SGD