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Heart|Natural|GIA

1.53ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6552739831

Certificate GIA 6552739831

Diamond specifications and retailer prices

From £6,904 GBP
$9,241 USD
As of November 5, 2026
4 retailers carry this diamond
Most expensive: £6,904 GBP at Blue Nile
View at Blue Nile

About this 1.53ct natural heart diamond

This 1.53ct 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 6552739831. Listed at 4 retailers as of November 5, 2026. 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

1.53
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552739831
Dimensions7.24 × 7.88 × 4.52 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Top View
7.24 mm7.88 mm1.53 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552739831
Side View
Table 57.0%CrownGirdle: Slightly Thick to Very ThickPavilionCulet: NDepth 57.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £6,904 GBP|Low: £4,942 GBP|High: £6,904 GBP|Avg: £6,030 GBP|+11.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 3£5,392 GBP
Retailer 7£5,444 GBP
Retailer 6£5,842 GBP
Retailer 4£5,931 GBP
Retailer 8£6,021 GBP
Retailer 2£6,356 GBP
Retailer 5£6,740 GBP
Blue Nile£6,904 GBP

15 data points across 8 retailers

4 retailers

Retailer 1
-
£5,842 GBP
Price last confirmed 15 days ago
Retailer 2
-
£5,931 GBP
View
Price last confirmed 12 days ago
Retailer 3
-
£6,740 GBP
View
Price last confirmed 14 days ago
Most Expensive
B
Blue Nile
29650954 · Nov 5
£6,904 GBP
$9,241 USD
View
3 more retailers have this diamond

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
1.53ct Heart
£6,904 GBP