Heart|Natural|GIA

1.80ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6442187096

Certificate GIA 6442187096

Diamond specifications and retailer prices

From $12,423 NZD
HK$54,700 HKD
As of November 1, 2026
Save $14,387 NZD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $26,810 NZD 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 $12,423 to $26,810, a $14,387 spread on the same certified stone. NZ Jewellers lists it at $26,810. 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: $14,997 NZD|Low: $12,678 NZD|High: $22,608 NZD|Avg: $16,049 NZD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3$12,708 NZD
Retailer 7$14,378 NZD
Retailer 8$14,796 NZD
Retailer 2$14,949 NZD
Retailer 1$14,997 NZD
Retailer 6$15,099 NZD
Retailer 5$19,693 NZD
Retailer 4$22,340 NZD

30 data points across 8 retailers

22 retailers$12,423 NZD to $26,810 NZD

A
Cheapest Retailer
-
$12,423 NZD
HK$54,700 HKD
A
Retailer 2
-
$12,708 NZD
₹682,107 INR
View
B+
Retailer 3
-
$13,563 NZD
$7,644 USD
View
Retailer 4
-
$13,747 NZD
SGD 10,470 SGD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$13,854 NZD
$7,808 USD
View
B+
Retailer 6
-
$14,378 NZD
SGD 10,951 SGD
View
B+
Retailer 7
-
$14,390 NZD
$8,110 USD
View
B+
Retailer 8
-
$14,443 NZD
$8,140 USD
View
B+
Retailer 9
-
$14,709 NZD
$8,290 USD
View
B+
Retailer 10
-
$14,796 NZD
$8,339 USD
View
B+
Retailer 11
-
$14,796 NZD
$8,339 USD
View
Final sale: no returns
B+
Retailer 12
-
$14,949 NZD
£6,634 GBP
View
B+
Retailer 13
-
$14,997 NZD
£6,655 GBP
View
Retailer 14
-
$15,099 NZD
A$13,092 AUD
View
Price last confirmed 9 days ago
B+
Retailer 15
-
$16,029 NZD
$9,034 USD
View
B+
Retailer 16
-
$16,276 NZD
$9,173 USD
View
B+
Retailer 17
-
$16,781 NZD
$9,458 USD
View
B
Retailer 18
-
$17,008 NZD
$9,586 USD
View
B+
Retailer 19
-
$18,495 NZD
$10,424 USD
View
B+
Retailer 20
-
$19,693 NZD
ZAR 179,303 ZAR
View
B
Retailer 21
-
$22,340 NZD
£9,914 GBP
View
Most Expensive
B
NZ Jewellers
a618d29c-7b39-4c36-8162-91f4522f4d77 · Oct 30
$26,810 NZD
$15,110 USD
View
21 more retailers have this diamond
Prices start from $12,423 NZDSave up to $14,387 NZD

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
$12,423 NZD