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Heart|Natural|GIA

0.90ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1537300520

Certificate GIA 1537300520

Diamond specifications and retailer prices

From $1,276 SGD
HK$7,800 HKD
As of November 1, 2026
Save $1,049 SGD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,896 SGD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1537300520. Listed at 14 retailers as of October 31, 2026, with a 82% 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

0.90
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 1537300520
Dimensions6.81 × 5.79 × 3.41 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
6.81 mm5.79 mm0.90 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1537300520
Side View
Table 60.0%CrownGirdle: STK-THKPavilion 40.4°Culet: NoneDepth 58.9%

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: $1,638 SGD|Low: $1,276 SGD|High: $3,556 SGD|Avg: $2,081 SGD|-4.3%
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 1, 2026
Retailer 6$1,276 SGD
Retailer 8$1,563 SGD
Retailer 1$1,638 SGD
Retailer 7$1,658 SGD
Retailer 10$1,685 SGD
Retailer 9$1,700 SGD
Retailer 13$1,716 SGD
Retailer 12$1,836 SGD
Retailer 2$1,982 SGD
Retailer 4$2,347 SGD
Retailer 5$2,640 SGD
Retailer 11$2,646 SGD
Retailer 3$3,288 SGD

33 data points across 13 retailers

14 retailers$1,276 SGD to $2,325 SGD

A
Cheapest Retailer
-
$1,276 SGD
HK$7,800 HKD
A
Retailer 2
-
$1,563 SGD
€1,164 EUR
View
A
Retailer 3
-
$1,638 SGD
$1,281 USD
View
A
Retailer 4
-
$1,658 SGD
£1,021 GBP
View
A
Retailer 5
-
$1,685 SGD
$1,318 USD
View
A
Retailer 6
-
$1,700 SGD
$1,330 USD
View
A
Retailer 7
-
$1,716 SGD
$1,342 USD
View
Final sale: no returns
Retailer 8
-
$1,836 SGD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,325 SGD
A$2,798 AUD
View
Retailer 10
-
$2,347 SGD
A$2,825 AUD
View
Price last confirmed 27 days ago
Retailer 11
-
$2,640 SGD
ZAR 33,363 ZAR
View
Price last confirmed 28 days ago
Retailer 12
-
$2,646 SGD
$2,070 USD
View
Price last confirmed 9 days ago
Retailer 13
-
$3,288 SGD
£2,025 GBP
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
d776dcc4-55cf-459f-b584-3a39876f34cc · Sep 25
$4,896 SGD
$3,830 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from $1,276 SGDSave up to $1,049 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
0.90ct Heart
$1,276 SGD