Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6157010233

Certificate GIA 6157010233

Diamond specifications and retailer prices

From $3,928 USD
As of November 6, 2026
Save $4,830 USD (55%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,758 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic 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 6157010233. Listed at 9 retailers as of November 5, 2026, with prices from $3,928 to $8,758, a $4,830 spread on the same certified stone. NZ Jewellers lists it at $8,758. 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

1.21
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6157010233
Dimensions7.33 × 7.70 × 3.58 mm
L/W Ratio1.05
Top View
7.33 mm7.70 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6157010233
Side View
Table 58.0%CrownGirdle: MED-EXTPavilionCulet: NoneDepth 46.5%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $8,758 USD|Low: $3,928 USD|High: $8,758 USD|Avg: $5,793 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$3,928 USD
Retailer 6$4,554 USD
Retailer 7$4,554 USD
Retailer 3$4,998 USD
Retailer 8$5,255 USD
Retailer 2$5,657 USD
Retailer 4$8,007 USD
NZ Jewellers$8,758 USD

43 data points across 8 retailers

9 retailers$3,928 USD to $8,758 USD

B+
Cheapest Retailer
-
$3,928 USD
B
Retailer 2
-
$4,554 USD
View
B
Retailer 3
-
$4,554 USD
View
B
Retailer 4
-
$4,998 USD
View
B
Retailer 5
-
$5,255 USD
View
B
Retailer 6
-
$5,657 USD
View
B
Retailer 7
-
$7,348 USD
View
B
Retailer 8
-
$8,007 USD
View
Most Expensive
B
NZ Jewellers
4d776d7f-8c59-4e0a-82a6-bbebfabea9df · Nov 5
$8,758 USD
View
8 more retailers have this diamond
Prices start from $3,928 USDSave up to $4,830 USD

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+
1.21ct Heart
$3,928 USD