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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6481518557

Certificate GIA 6481518557

Diamond specifications and retailer prices

From €5,962 EUR
As of November 4, 2026
Save €4,526 EUR (43%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €10,488 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6481518557. Listed at 19 retailers as of November 4, 2026, with prices from €5,962 to €10,488, a €4,526 spread on the same certified stone. MOH London lists it at €10,488. 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

1.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6481518557
Dimensions7.15 × 6.78 × 4.48 mm
L/W Ratio1.05
Top View
7.15 mm6.78 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6481518557
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €10,488 EUR|Low: €5,962 EUR|High: €10,629 EUR|Avg: €7,686 EUR|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4€5,962 EUR
Retailer 11€6,309 EUR
Retailer 3€6,310 EUR
Retailer 12€6,363 EUR
Retailer 6€7,053 EUR
Retailer 2€7,071 EUR
Retailer 10€7,235 EUR
Retailer 9€7,237 EUR
Retailer 5€8,198 EUR
Retailer 7€9,206 EUR
Retailer 8€10,419 EUR
MOH London€10,488 EUR

36 data points across 12 retailers

19 retailers€5,962 EUR to €10,488 EUR

B+
Cheapest Retailer
-
€5,962 EUR
B+
Retailer 2
-
€5,996 EUR
View
B+
Retailer 3
-
€6,309 EUR
View
Final sale: no returns
B+
Retailer 4
-
€6,310 EUR
View
Retailer 5
-
€6,310 EUR
View
Price last confirmed 30 days ago
B+
Retailer 6
-
€6,363 EUR
View
B+
Retailer 7
-
€6,720 EUR
View
B+
Retailer 8
-
€7,053 EUR
View
B+
Retailer 9
-
€7,071 EUR
View
B
Retailer 10
-
€7,235 EUR
View
Retailer 11
-
€7,237 EUR
View
Price last confirmed 16 days ago
B
Retailer 12
-
€7,255 EUR
View
B
Retailer 13
-
€7,255 EUR
View
B
Retailer 14
-
€7,497 EUR
View
B
Retailer 15
-
€7,596 EUR
View
B
Retailer 16
-
€8,198 EUR
View
B
Retailer 17
-
€9,206 EUR
View
Retailer 18
-
€10,419 EUR
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
7918798AC · Nov 4
€10,488 EUR
£9,220 GBP
View
18 more retailers have this diamond
Prices start from €5,962 EURSave up to €4,526 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+
1.51ct Heart
€5,962 EUR