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Heart|Natural|GIA

0.90ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 7531907309

Certificate GIA 7531907309

Diamond specifications and retailer prices

From $1,358 SGD
HK$8,300 HKD
As of November 1, 2026
Save $1,050 SGD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,643 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 7531907309. Listed at 16 retailers as of October 31, 2026, with a 77% 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
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 7531907309
Dimensions5.97 × 6.97 × 3.84 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
5.97 mm6.97 mm0.90 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7531907309
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 39.7°Culet: NoneDepth 55.1%

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: $1,712 SGD|Low: $1,325 SGD|High: $3,371 SGD|Avg: $2,129 SGD|-3.9%
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
Retailer 14
Retailer 15
November 1, 2026
Retailer 8$1,358 SGD
Retailer 10$1,647 SGD
Retailer 15$1,673 SGD
Retailer 1$1,712 SGD
Retailer 9$1,765 SGD
Retailer 12$1,765 SGD
Retailer 11$1,803 SGD
Retailer 14$1,927 SGD
Retailer 4$1,943 SGD
Retailer 6$2,025 SGD
Retailer 2$2,202 SGD
Retailer 5$2,367 SGD
Retailer 7$2,574 SGD
Retailer 13$2,775 SGD
Retailer 3$3,353 SGD

33 data points across 15 retailers

16 retailers$1,358 SGD to $2,408 SGD

A
Cheapest Retailer
-
$1,358 SGD
HK$8,300 HKD
A
Retailer 2
-
$1,647 SGD
€1,227 EUR
View
A
Retailer 3
-
$1,673 SGD
$1,309 USD
View
Final sale: no returns
A
Retailer 4
-
$1,712 SGD
$1,339 USD
View
A
Retailer 5
-
$1,765 SGD
£1,087 GBP
View
A
Retailer 6
-
$1,765 SGD
$1,381 USD
View
A
Retailer 7
-
$1,803 SGD
$1,410 USD
View
Retailer 8
-
$1,927 SGD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,202 SGD
View
Retailer 10
-
$2,295 SGD
£1,414 GBP
View
Price last confirmed 36 days ago
Retailer 11
-
$2,367 SGD
A$2,848 AUD
View
Price last confirmed 27 days ago
B+
Retailer 12
-
$2,408 SGD
A$2,898 AUD
View
Retailer 13
-
$2,574 SGD
ZAR 32,530 ZAR
View
Price last confirmed 28 days ago
Retailer 14
-
$2,775 SGD
$2,171 USD
View
Price last confirmed 9 days ago
Retailer 15
-
$3,353 SGD
£2,065 GBP
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
aeca36d5-e04d-44db-85b9-434e6eec66ff · Sep 25
$4,643 SGD
$3,632 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $1,358 SGDSave up to $1,050 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
$1,358 SGD