Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 1518041165

Certificate GIA 1518041165

Diamond specifications and retailer prices

From $2,785 USD
As of October 31, 2026
Save $2,635 USD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,420 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1518041165. Listed at 14 retailers as of October 30, 2026, with prices from $2,785 to $5,420, a $2,635 spread on the same certified stone. NZ Jewellers lists it at $5,420. 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

1.51
Carat
H
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.41°
Pavilion angle41.03°
OriginNatural
Grading LabGIA
CertificateGIA 1518041165
Dimensions7.06 × 7.92 × 4.64 mm
L/W Ratio1.12
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal
Top View
7.06 mm7.92 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1518041165
Side View
Table 59.0%Crown 36.41°Girdle: Slightly ThickPavilion 41.03°Culet: NoneDepth 58.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $5,420 USD|Low: $2,314 USD|High: $5,585 USD|Avg: $3,659 USD|-3.0%
NZ Jewellers
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 10$2,785 USD
Retailer 13$2,870 USD
Retailer 9$2,977 USD
Retailer 2$3,014 USD
Retailer 3$3,206 USD
Retailer 5$3,206 USD
Retailer 6$3,251 USD
Retailer 7$3,254 USD
Retailer 4$3,329 USD
Retailer 12$3,351 USD
Retailer 11$3,589 USD
Retailer 8$5,202 USD
NZ Jewellers$5,420 USD

37 data points across 13 retailers

14 retailers$2,785 USD to $5,420 USD

A
Cheapest Retailer
-
$2,785 USD
A
Retailer 2
-
$2,870 USD
View
Final sale: no returns
A
Retailer 3
-
$2,977 USD
View
A
Retailer 4
-
$3,014 USD
£2,373 GBP
View
A
Retailer 5
-
$3,206 USD
View
A
Retailer 6
-
$3,206 USD
View
A
Retailer 7
-
$3,251 USD
£2,559 GBP
View
A
Retailer 8
-
$3,254 USD
View
A
Retailer 9
-
$3,329 USD
View
A
Retailer 10
-
$3,351 USD
View
A
Retailer 11
-
$3,375 USD
View
A
Retailer 12
-
$3,589 USD
View
B+
Retailer 13
-
$5,202 USD
£4,096 GBP
View
Most Expensive
B+
NZ Jewellers
3ef3aafe-6508-4d86-bef5-7e30bf4a7775 · Oct 30
$5,420 USD
View
13 more retailers have this diamond
Prices start from $2,785 USDSave up to $2,635 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.

A
1.51ct Heart
$2,785 USD