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Heart|Natural|GIA

1.03ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 1156016999

Certificate GIA 1156016999

Diamond specifications and retailer prices

From €2,631 EUR
As of November 6, 2026
Save €1,712 EUR (39%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €4,343 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.03ct natural heart diamond

This 1.03ct natural heart sits in the classic one-carat band, graded K 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 1156016999. Listed at 2 retailers as of November 4, 2026, with prices from €2,631 to €4,343, a €1,712 spread on the same certified stone. MOH London lists it at €4,343. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1156016999
Dimensions5.84 × 6.69 × 4.11 mm
L/W Ratio1.15
Key to symbols
Crystal, Indented Natural, Cloud, Feather, Pinpoint, Natural
Top View
5.84 mm6.69 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1156016999
Side View
Table 64.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 61.5%

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: €4,343 EUR|Low: €2,441 EUR|High: €4,407 EUR|Avg: €2,951 EUR|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5€2,441 EUR
Retailer 4€2,474 EUR
Retailer 2€2,631 EUR
Retailer 3€2,849 EUR
MOH London€4,343 EUR

36 data points across 5 retailers

2 retailers€2,631 EUR to €4,343 EUR

B
Cheapest Retailer
-
€2,631 EUR
Most Expensive
C
MOH London
F1D8BED5E · Nov 4
€4,343 EUR
£3,818 GBP
View
1 more retailer has this diamond
Prices start from €2,631 EURSave up to €1,712 EUR

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
€2,631 EUR