CaratHunter
Plans
Heart|Natural|GIA

1.00ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6531883704

Certificate GIA 6531883704

Diamond specifications and retailer prices

From £1,478 GBP
As of November 4, 2026
Save £1,609 GBP (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,902 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-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 6531883704. Listed at 20 retailers as of November 4, 2026, with a 109% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531883704
Dimensions6.25 × 7.08 × 4.03 mm
L/W Ratio1.13
Top View
6.25 mm7.08 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531883704
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 56.9%

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 4
Current: £1,920 GBP|Low: £1,478 GBP|High: £3,463 GBP|Avg: £2,128 GBP|+0.0%
Retailer 1
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 6, 2026
Retailer 13£1,478 GBP
Retailer 2£1,523 GBP
Retailer 8£1,539 GBP
Retailer 12£1,642 GBP
Retailer 5£1,754 GBP
Retailer 3£1,860 GBP
Retailer 10£1,860 GBP
Retailer 1£1,920 GBP
Retailer 11£1,920 GBP
Retailer 4£2,089 GBP
Retailer 6£2,156 GBP
Retailer 7£3,087 GBP
Retailer 9£3,463 GBP

43 data points across 13 retailers

20 retailers£1,478 GBP to £3,087 GBP

A
Cheapest Retailer
-
£1,478 GBP
Final sale: no returns
A
Retailer 2
-
£1,523 GBP
View
A
Retailer 3
-
£1,539 GBP
View
A
Retailer 4
-
£1,642 GBP
View
Retailer 5
-
£1,680 GBP
View
Price last confirmed 25 days ago
Retailer 6
-
£1,680 GBP
View
Price last confirmed 27 days ago
Retailer 7
-
£1,691 GBP
View
Price last confirmed 39 days ago
B+
Retailer 8
-
£1,754 GBP
View
Retailer 9
-
£1,769 GBP
View
Price last confirmed 36 days ago
B+
Retailer 10
-
£1,860 GBP
View
B+
Retailer 11
-
£1,860 GBP
View
B+
Retailer 12
-
£1,892 GBP
View
B+
Retailer 13
-
£1,920 GBP
View
B+
Retailer 14
-
£1,920 GBP
View
Retailer 15
-
£1,951 GBP
View
Price last confirmed 38 days ago
Retailer 16
-
£2,089 GBP
View
Price last confirmed 31 days ago
B+
Retailer 17
-
£2,156 GBP
View
B
Retailer 18
-
£3,087 GBP
View
Retailer 19
-
£3,463 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
c8d3a395-fa61-4640-87ca-584ed24e12d7 · Sep 28
£3,902 GBP
$5,223 USD
View
Price last confirmed 39 days ago
19 more retailers have this diamond
Prices start from £1,478 GBPSave up to £1,609 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.

A
1.00ct Heart
£1,478 GBP