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Heart|Natural|GIA

1.00ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 5553498942

Certificate GIA 5553498942

Diamond specifications and retailer prices

From £1,524 GBP
As of November 6, 2026
Save £2,832 GBP (65%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,356 GBP at NZ Jewellers · As of November 5, 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 5553498942. Listed at 16 retailers as of November 5, 2026, with prices from £1,524 to £4,356, a £2,832 spread on the same certified stone. NZ Jewellers lists it at £4,356. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553498942
Dimensions5.71 × 6.88 × 4.18 mm
L/W Ratio1.20
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Knot, Feather
Top View
5.71 mm6.88 mm1.00 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553498942
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.7%

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 6
Current: £4,356 GBP|Low: £1,438 GBP|High: £4,356 GBP|Avg: £2,236 GBP|+1.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 8£1,524 GBP
Retailer 7£1,630 GBP
Retailer 6£1,726 GBP
Retailer 17£1,888 GBP
Retailer 19£1,888 GBP
Retailer 18£1,975 GBP
Retailer 10£1,987 GBP
Retailer 12£1,998 GBP
Retailer 11£2,010 GBP
Retailer 2£2,021 GBP
Retailer 20£2,052 GBP
Retailer 3£2,167 GBP
Retailer 4£2,167 GBP
Retailer 16£2,178 GBP
Retailer 5£2,234 GBP
Retailer 9£2,377 GBP
Retailer 13£2,425 GBP
Retailer 14£2,543 GBP
Retailer 15£3,650 GBP
NZ Jewellers£4,356 GBP

27 data points across 20 retailers

16 retailers£1,524 GBP to £4,356 GBP

A
Cheapest Retailer
-
£1,524 GBP
A
Retailer 2
-
£1,630 GBP
View
B+
Retailer 3
-
£1,888 GBP
View
B+
Retailer 4
-
£1,975 GBP
View
B+
Retailer 5
-
£1,987 GBP
View
B+
Retailer 6
-
£2,021 GBP
View
B+
Retailer 7
-
£2,052 GBP
View
B+
Retailer 8
-
£2,167 GBP
View
B+
Retailer 9
-
£2,167 GBP
View
B+
Retailer 10
-
£2,178 GBP
View
B+
Retailer 11
-
£2,234 GBP
View
B+
Retailer 12
-
£2,377 GBP
View
B+
Retailer 13
-
£2,425 GBP
View
B
Retailer 14
-
£2,543 GBP
View
B
Retailer 15
-
£3,650 GBP
View
Most Expensive
B
NZ Jewellers
5ea2b3d2-342e-4772-8662-0e790b0f8bca · Nov 5
£4,356 GBP
$5,831 USD
View
15 more retailers have this diamond
Prices start from £1,524 GBPSave up to £2,832 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
£1,524 GBP