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Heart|Natural|GIA

1.03ct L SI1 Heart Natural Diamond

EX • L/SI1 • GIA 01A

Certificate GIA 01A

Diamond specifications and retailer prices

From £1,133 GBP
As of November 6, 2026
Save £27 GBP (2%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,160 GBP at DreamStone · As of November 4, 2026
View at DreamStone

About this 1.03ct natural heart diamond

This 1.03ct natural heart sits in the classic one-carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of November 4, 2026, with a relatively tight 2% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.03
Carat
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 01A
Dimensions5.77 × 6.39 mm
L/W Ratio1.11
Top View
5.77 mm6.39 mm1.03 ctL / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 01A
Side View
Table 58.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 60.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £1,160 GBP|Low: £1,118 GBP|High: £1,160 GBP|Avg: £1,146 GBP
DreamStone
Retailer 2
September 23, 2026
Retailer 2£1,133 GBP
DreamStone£1,160 GBP

3 data points across 2 retailers

2 retailers£1,133 GBP to £1,160 GBP

B
Cheapest Retailer
-
£1,133 GBP
Most Expensive
B
DreamStone
692fe0163b0275f788515028 · Nov 4
£1,160 GBP
$1,553 USD
View
1 more retailer has this diamond
Prices start from £1,133 GBPSave up to £27 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
1.03ct Heart
£1,133 GBP