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Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 1543580785

Certificate GIA 1543580785

Diamond specifications and retailer prices

From $3,085 USD
HK$24,100 HKD
As of November 2, 2026
Save $4,980 USD (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,065 USD at Queensmith · As of October 28, 2026
View at Queensmith

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 1543580785. Listed at 17 retailers as of October 28, 2026, with prices from $3,085 to $8,065, a $4,980 spread on the same certified stone. Queensmith lists it at $8,065. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543580785
Dimensions7.05 × 8.02 × 4.63 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Needle, Indented Natural
Top View
7.05 mm8.02 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543580785
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.8%

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 2
Current: $8,065 USD|Low: $3,085 USD|High: $8,280 USD|Avg: $4,725 USD|-2.6%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 2$3,085 USD
Retailer 6$3,310 USD
Retailer 4$3,733 USD
Retailer 10$3,916 USD
Retailer 8$4,034 USD
Retailer 5$4,137 USD
Retailer 3$4,192 USD
Retailer 9$4,240 USD
Retailer 7$6,812 USD
Queensmith$8,065 USD

37 data points across 10 retailers

17 retailers$3,085 USD to $8,065 USD

A
Cheapest Retailer
-
$3,085 USD
HK$24,100 HKD
A
Retailer 2
-
$3,310 USD
₹315,272 INR
View
A
Retailer 3
-
$3,733 USD
View
Final sale: no returns
Retailer 4
-
$3,916 USD
SGD 5,292 SGD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$4,034 USD
SGD 5,452 SGD
View
A
Retailer 6
-
$4,137 USD
£3,258 GBP
View
B+
Retailer 7
-
$4,192 USD
View
B+
Retailer 8
-
$4,194 USD
View
B+
Retailer 9
-
$4,240 USD
View
B+
Retailer 10
-
$4,445 USD
A$6,838 AUD
View
Retailer 11
-
$4,557 USD
View
Price last confirmed 25 days ago
Retailer 12
-
$4,557 USD
View
Price last confirmed 32 days ago
Retailer 13
-
$4,557 USD
View
Price last confirmed 25 days ago
Retailer 14
-
$5,258 USD
View
Price last confirmed 34 days ago
B
Retailer 15
-
$6,812 USD
£5,364 GBP
View
Retailer 16
-
$7,940 USD
View
Price last confirmed 32 days ago
Most Expensive
B
Queensmith
1543580785 · Oct 28
$8,065 USD
£6,350 GBP
View
16 more retailers have this diamond
Prices start from $3,085 USDSave up to $4,980 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
$3,085 USD