Heart|Natural|GIA

1.51ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1407883320

Certificate GIA 1407883320

Diamond specifications and retailer prices

From $9,987 USD
As of October 28, 2026
Save $5,904 USD (37%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $15,891 USD 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 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 1407883320. Listed at 12 retailers as of October 27, 2026, with prices from $9,987 to $15,891, a $5,904 spread on the same certified stone. NZ Jewellers lists it at $15,891. 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
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1407883320
Dimensions6.30 × 7.83 × 4.87 mm
L/W Ratio1.24
Culet sizeNone
Top View
6.30 mm7.83 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1407883320
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.2%

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: Oct 28
Current: $15,891 USD|Low: $9,987 USD|High: $15,891 USD|Avg: $12,484 USD
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
Retailer 14
October 25, 2026
Retailer 13$9,987 USD
Retailer 7$10,490 USD
Retailer 3$10,630 USD
Retailer 10$10,797 USD
Retailer 14$11,360 USD
Retailer 12$11,661 USD
Retailer 4$11,670 USD
Retailer 9$11,840 USD
Retailer 6$13,050 USD
Retailer 11$13,455 USD
Retailer 5$13,599 USD
Retailer 8$13,840 USD
Retailer 2$14,911 USD
NZ Jewellers$15,891 USD

27 data points across 14 retailers

12 retailers$9,987 USD to $15,891 USD

B+
Cheapest Retailer
-
$9,987 USD
Retailer 2
-
$10,490 USD
A$16,139 AUD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$10,630 USD
View
Retailer 4
-
$10,797 USD
£8,502 GBP
View
Price last confirmed 32 days ago
B
Retailer 5
-
$11,360 USD
View
B
Retailer 6
-
$11,661 USD
View
Retailer 7
-
$11,670 USD
View
Price last confirmed 7 days ago
B
Retailer 8
-
$11,840 USD
View
B
Retailer 9
-
$13,455 USD
View
Retailer 10
-
$13,840 USD
ZAR 223,583 ZAR
View
Price last confirmed 15 days ago
B
Retailer 11
-
$14,911 USD
£11,741 GBP
View
Most Expensive
B
NZ Jewellers
7c7edc1d-f382-4685-a580-b6c2ed0237bf · Oct 27
$15,891 USD
View
11 more retailers have this diamond
Prices start from $9,987 USDSave up to $5,904 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+
1.51ct Heart
$9,987 USD