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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 $9,991 AUD
HK$54,700 HKD
As of November 1, 2026
Save $11,570 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $21,560 AUD 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 $9,991 to $21,560, a $11,570 spread on the same certified stone. NZ Jewellers lists it at $21,560. 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: $10,216 AUD|Low: $10,196 AUD|High: $18,181 AUD|Avg: $12,919 AUD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 1$10,216 AUD
Retailer 7$11,563 AUD
Retailer 8$11,899 AUD
Retailer 3$12,022 AUD
Retailer 2$12,061 AUD
Retailer 6$12,143 AUD
Retailer 5$15,837 AUD
Retailer 4$17,966 AUD

29 data points across 8 retailers

22 retailers$9,991 AUD to $21,560 AUD

A
Cheapest Retailer
-
$9,991 AUD
HK$54,700 HKD
A
Retailer 2
-
$10,216 AUD
₹681,887 INR
View
B+
Retailer 3
-
$10,907 AUD
$7,644 USD
View
Retailer 4
-
$11,055 AUD
SGD 10,470 SGD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$11,141 AUD
$7,808 USD
View
B+
Retailer 6
-
$11,563 AUD
SGD 10,951 SGD
View
B+
Retailer 7
-
$11,572 AUD
$8,110 USD
View
B+
Retailer 8
-
$11,615 AUD
$8,140 USD
View
B+
Retailer 9
-
$11,829 AUD
$8,290 USD
View
B+
Retailer 10
-
$11,899 AUD
$8,339 USD
View
B+
Retailer 11
-
$11,899 AUD
$8,339 USD
View
Final sale: no returns
B+
Retailer 12
-
$12,022 AUD
£6,634 GBP
View
B+
Retailer 13
-
$12,061 AUD
£6,655 GBP
View
Retailer 14
-
$12,143 AUD
View
Price last confirmed 10 days ago
B+
Retailer 15
-
$12,891 AUD
$9,034 USD
View
B+
Retailer 16
-
$13,089 AUD
$9,173 USD
View
B+
Retailer 17
-
$13,495 AUD
$9,458 USD
View
B
Retailer 18
-
$13,678 AUD
$9,586 USD
View
B+
Retailer 19
-
$14,874 AUD
$10,424 USD
View
B+
Retailer 20
-
$15,837 AUD
ZAR 179,303 ZAR
View
B
Retailer 21
-
$17,966 AUD
£9,914 GBP
View
Most Expensive
B
NZ Jewellers
a618d29c-7b39-4c36-8162-91f4522f4d77 · Oct 30
$21,560 AUD
$15,110 USD
View
21 more retailers have this diamond
Prices start from $9,991 AUDSave up to $11,570 AUD

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
$9,991 AUD