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Heart|Natural|GIA

1.51ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 6511530906

Certificate GIA 6511530906

Diamond specifications and retailer prices

From $6,827 SGD
£4,194 GBP
As of October 30, 2026
Save $6,141 SGD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,968 SGD at NZ Jewellers · As of October 27, 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 E 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 6511530906. Listed at 9 retailers as of October 27, 2026, with prices from $6,827 to $12,968, a $6,141 spread on the same certified stone. NZ Jewellers lists it at $12,968. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.52°
Pavilion angle41.99°
OriginNatural
Grading LabGIA
CertificateGIA 6511530906
Dimensions6.98 × 8.02 × 4.83 mm
L/W Ratio1.15
Top View
6.98 mm8.02 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6511530906
Side View
Table 61.0%Crown 36.52°Girdle: Slightly Thick to ThickPavilion 41.99°Culet: NDepth 60.2%

Caratlytics Score

How it works →
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 30
Current: $12,968 SGD|Low: $6,806 SGD|High: $12,968 SGD|Avg: $8,698 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2$6,827 SGD
Retailer 6$7,137 SGD
Retailer 8$7,389 SGD
Retailer 3$7,584 SGD
Retailer 4$7,584 SGD
Retailer 9$7,665 SGD
Retailer 5$7,720 SGD
Retailer 7$11,233 SGD
NZ Jewellers$12,968 SGD

45 data points across 9 retailers

9 retailers$6,827 SGD to $12,968 SGD

A
Cheapest Retailer
-
$6,827 SGD
£4,194 GBP
A
Retailer 2
-
$7,137 SGD
£4,385 GBP
View
B+
Retailer 3
-
$7,389 SGD
$5,765 USD
View
A
Retailer 4
-
$7,584 SGD
$5,917 USD
View
A
Retailer 5
-
$7,584 SGD
$5,917 USD
View
Retailer 6
-
$7,665 SGD
A$9,201 AUD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$7,720 SGD
$6,023 USD
View
B+
Retailer 8
-
$11,233 SGD
£6,901 GBP
View
Most Expensive
B
NZ Jewellers
8134b5e0-c12e-4565-9ea7-62757ff29826 · Oct 27
$12,968 SGD
$10,118 USD
View
8 more retailers have this diamond
Prices start from $6,827 SGDSave up to $6,141 SGD

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
$6,827 SGD