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Heart|Natural|GIA

0.37ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6445393329

Certificate GIA 6445393329

Diamond specifications and retailer prices

From $979 NZD
$552 USD
As of October 31, 2026
Save $809 NZD (45%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,600 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 0.37ct natural heart diamond

This 0.37ct natural heart sits in the sub-half-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 6445393329. Listed at 17 retailers as of October 30, 2026, with a 83% 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

0.37
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38.3°
Pavilion angle38.9°
OriginNatural
Grading LabGIA
CertificateGIA 6445393329
Dimensions4.20 × 5.00 × 2.96 mm
L/W Ratio1.19
Top View
4.20 mm5.00 mm0.37 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6445393329
Side View
Table 62.0%Crown 38.3°Girdle: THN-THKPavilion 38.9°Culet: NoneDepth 59.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $2,600 NZD|Low: $1,153 NZD|High: $3,616 NZD|Avg: $1,656 NZD|-0.2%
MOH London
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 2, 2026
Retailer 12$1,153 NZD
Retailer 4$1,171 NZD
Retailer 10$1,180 NZD
Retailer 9$1,242 NZD
Retailer 11$1,242 NZD
Retailer 2$1,259 NZD
Retailer 3$1,331 NZD
Retailer 5$1,345 NZD
Retailer 7$1,580 NZD
Retailer 8$1,734 NZD
Retailer 6$1,788 NZD
MOH London$2,600 NZD
Retailer 13$3,616 NZD

39 data points across 13 retailers

17 retailers$979 NZD to $1,788 NZD

B+
Cheapest Retailer
-
$979 NZD
$552 USD
B+
Retailer 2
-
$1,153 NZD
$650 USD
View
B+
Retailer 3
-
$1,171 NZD
$660 USD
View
B+
Retailer 4
-
$1,180 NZD
$665 USD
View
B+
Retailer 5
-
$1,242 NZD
$700 USD
View
B+
Retailer 6
-
$1,242 NZD
$700 USD
View
B+
Retailer 7
-
$1,259 NZD
£559 GBP
View
B
Retailer 8
-
$1,277 NZD
$720 USD
View
B
Retailer 9
-
$1,277 NZD
$720 USD
View
B
Retailer 10
-
$1,331 NZD
$750 USD
View
B
Retailer 11
-
$1,331 NZD
$750 USD
View
B
Retailer 12
-
$1,387 NZD
$782 USD
View
B
Retailer 13
-
$1,580 NZD
£701 GBP
View
Retailer 14
-
$1,734 NZD
A$1,503 AUD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$1,788 NZD
ZAR 16,280 ZAR
View
Most Expensive
MOH London
E65116B3F · Nov 1
$2,600 NZD
£1,154 GBP
View
Price under review
15 more retailers have this diamond
Prices start from $979 NZDSave up to $809 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.

B+
0.37ct Heart
$979 NZD