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Heart|Natural|GIA

1.80ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6442187096

Certificate GIA 6442187096

Diamond specifications and retailer prices

From $8,951 SGD
HK$54,700 HKD
As of November 1, 2026
Save $10,366 SGD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $19,317 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.8ct natural heart diamond

This 1.8ct natural heart sits in the one-and-a-half to two 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 6442187096. Listed at 22 retailers as of October 30, 2026, with prices from $8,951 to $19,317, a $10,366 spread on the same certified stone. NZ Jewellers lists it at $19,317. 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

1.80
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle38.58°
OriginNatural
Grading LabGIA
CertificateGIA 6442187096
Dimensions8.19 × 6.84 × 5.13 mm
L/W Ratio1.20
Top View
8.19 mm6.84 mm1.80 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6442187096
Side View
Table 60.0%Crown 38.58°Girdle: STK-VTKPavilionCulet: NoneDepth 62.6%

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: $10,771 SGD|Low: $9,135 SGD|High: $16,289 SGD|Avg: $11,560 SGD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2$9,156 SGD
Retailer 7$10,360 SGD
Retailer 8$10,661 SGD
Retailer 1$10,771 SGD
Retailer 4$10,806 SGD
Retailer 6$10,879 SGD
Retailer 5$14,189 SGD
Retailer 3$16,096 SGD

30 data points across 8 retailers

22 retailers$8,951 SGD to $19,317 SGD

A
Cheapest Retailer
-
$8,951 SGD
HK$54,700 HKD
A
Retailer 2
-
$9,156 SGD
₹682,107 INR
View
B+
Retailer 3
-
$9,772 SGD
$7,644 USD
View
Retailer 4
-
$9,905 SGD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$9,982 SGD
$7,808 USD
View
B+
Retailer 6
-
$10,360 SGD
View
B+
Retailer 7
-
$10,368 SGD
$8,110 USD
View
B+
Retailer 8
-
$10,406 SGD
$8,140 USD
View
B+
Retailer 9
-
$10,598 SGD
$8,290 USD
View
B+
Retailer 10
-
$10,661 SGD
$8,339 USD
View
B+
Retailer 11
-
$10,661 SGD
$8,339 USD
View
Final sale: no returns
B+
Retailer 12
-
$10,771 SGD
£6,634 GBP
View
B+
Retailer 13
-
$10,806 SGD
£6,656 GBP
View
Retailer 14
-
$10,879 SGD
A$13,092 AUD
View
Price last confirmed 9 days ago
B+
Retailer 15
-
$11,549 SGD
$9,034 USD
View
B+
Retailer 16
-
$11,727 SGD
$9,173 USD
View
B+
Retailer 17
-
$12,091 SGD
$9,458 USD
View
B
Retailer 18
-
$12,255 SGD
$9,586 USD
View
B+
Retailer 19
-
$13,326 SGD
$10,424 USD
View
B+
Retailer 20
-
$14,189 SGD
ZAR 179,303 ZAR
View
B
Retailer 21
-
$16,096 SGD
£9,914 GBP
View
Most Expensive
B
NZ Jewellers
a618d29c-7b39-4c36-8162-91f4522f4d77 · Oct 30
$19,317 SGD
$15,110 USD
View
21 more retailers have this diamond
Prices start from $8,951 SGDSave up to $10,366 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
1.80ct Heart
$8,951 SGD