Heart|Natural|GIA

1.51ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1407883320

Certificate GIA 1407883320

Diamond specifications and retailer prices

From £7,454 GBP
$9,987 USD
As of October 28, 2026
Save £4,406 GBP (37%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £11,860 GBP 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 £7,454 to £11,860, a £4,406 spread on the same certified stone. NZ Jewellers lists it at £11,860. 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
Colour
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: £11,860 GBP|Low: £7,454 GBP|High: £11,860 GBP|Avg: £9,317 GBP
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£7,454 GBP
Retailer 7£7,829 GBP
Retailer 3£7,933 GBP
Retailer 10£8,058 GBP
Retailer 14£8,478 GBP
Retailer 12£8,703 GBP
Retailer 4£8,709 GBP
Retailer 9£8,837 GBP
Retailer 6£9,740 GBP
Retailer 11£10,042 GBP
Retailer 5£10,149 GBP
Retailer 8£10,329 GBP
Retailer 2£11,129 GBP
NZ Jewellers£11,860 GBP

27 data points across 14 retailers

12 retailers£7,454 GBP to £11,860 GBP

B+
Cheapest Retailer
-
£7,454 GBP
$9,987 USD
Retailer 2
-
£7,829 GBP
A$16,139 AUD
View
Price last confirmed 8 days ago
B
Retailer 3
-
£7,933 GBP
$10,630 USD
View
Retailer 4
-
£8,058 GBP
View
Price last confirmed 32 days ago
B
Retailer 5
-
£8,478 GBP
$11,360 USD
View
B
Retailer 6
-
£8,703 GBP
$11,661 USD
View
Retailer 7
-
£8,709 GBP
$11,670 USD
View
Price last confirmed 7 days ago
Retailer 8
-
£8,837 GBP
$11,840 USD
View
Price last confirmed 7 days ago
B
Retailer 9
-
£10,042 GBP
$13,455 USD
View
Retailer 10
-
£10,329 GBP
ZAR 223,583 ZAR
View
Price last confirmed 15 days ago
B
Retailer 11
-
£11,129 GBP
View
Most Expensive
B
NZ Jewellers
7c7edc1d-f382-4685-a580-b6c2ed0237bf · Oct 27
£11,860 GBP
$15,891 USD
View
11 more retailers have this diamond
Prices start from £7,454 GBPSave up to £4,406 GBP

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
£7,454 GBP