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Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1236656907

Certificate GIA 1236656907

Diamond specifications and retailer prices

From $8,555 SGD
$6,692 USD
As of October 30, 2026
Save $5,190 SGD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $16,407 SGD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1236656907. Listed at 9 retailers as of October 29, 2026, with a 61% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236656907
Dimensions6.94 × 8.15 × 4.51 mm
L/W Ratio1.17
Top View
6.94 mm8.15 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1236656907
Side View
Table 59.0%CrownGirdlePavilionCulet: NoneDepth 55.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $16,407 SGD|Low: $6,318 SGD|High: $16,407 SGD|Avg: $10,442 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 5$6,318 SGD
Retailer 12$8,555 SGD
Retailer 7$9,055 SGD
Retailer 4$9,139 SGD
Retailer 6$9,228 SGD
Retailer 2$9,271 SGD
Retailer 9$9,809 SGD
Retailer 8$9,960 SGD
Retailer 3$10,585 SGD
Retailer 11$11,319 SGD
Retailer 13$11,784 SGD
Retailer 10$13,745 SGD
NZ Jewellers$16,407 SGD

17 data points across 13 retailers

9 retailers$8,555 SGD to $13,745 SGD

B+
Cheapest Retailer
-
$8,555 SGD
$6,692 USD
B+
Retailer 2
-
$9,055 SGD
$7,083 USD
View
B+
Retailer 3
-
$9,228 SGD
£5,684 GBP
View
B+
Retailer 4
-
$9,271 SGD
£5,710 GBP
View
B+
Retailer 5
-
$9,809 SGD
$7,673 USD
View
B
Retailer 6
-
$9,960 SGD
$7,791 USD
View
Retailer 7
-
$11,319 SGD
$8,854 USD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$13,745 SGD
£8,466 GBP
View
Most Expensive
NZ Jewellers
4d10a256-f519-45c9-b7a5-dd871cc9cfb4 · Oct 21
$16,407 SGD
$12,834 USD
View
Price last confirmed 11 days ago
8 more retailers have this diamond
Prices start from $8,555 SGDSave up to $5,190 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.

B+
1.51ct Heart
$8,555 SGD