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Round|Natural|GIA

1.02ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1428908142

Certificate GIA 1428908142

Diamond specifications and retailer prices

From €2,280 EUR
As of November 6, 2026
Save €3,816 EUR (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €6,097 EUR at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1428908142. Listed at 19 retailers as of November 5, 2026, with prices from €2,280 to €6,097, a €3,816 spread on the same certified stone. Diamond Quarter lists it at €6,097. 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

1.02
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1428908142
Dimensions6.44 × 6.40 × 4.00 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Knot
Top View
6.44 mm6.40 mm1.02 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1428908142
Side View
Table 58.0%Crown 34.5°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 62.3%

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: €3,244 EUR|Low: €2,280 EUR|High: €5,339 EUR|Avg: €3,374 EUR|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 2€2,280 EUR
Retailer 8€2,315 EUR
Retailer 9€2,912 EUR
Retailer 3€3,018 EUR
Retailer 4€3,224 EUR
Retailer 1€3,244 EUR
Retailer 7€3,358 EUR
Retailer 5€3,850 EUR
Retailer 6€5,262 EUR

29 data points across 9 retailers

19 retailers€2,280 EUR to €6,097 EUR

A
Cheapest Retailer
-
€2,280 EUR
B+
Retailer 2
-
€2,315 EUR
View
B+
Retailer 3
-
€2,748 EUR
View
B
Retailer 4
-
€2,912 EUR
View
Final sale: no returns
Retailer 5
-
€2,949 EUR
View
Price last confirmed 110 days ago
B+
Retailer 6
-
€3,018 EUR
View
B+
Retailer 7
-
€3,036 EUR
View
B+
Retailer 8
-
€3,155 EUR
View
B
Retailer 9
-
€3,224 EUR
View
B+
Retailer 10
-
€3,244 EUR
View
B
Retailer 11
-
€3,284 EUR
View
B+
Retailer 12
-
€3,358 EUR
View
Retailer 13
-
€3,369 EUR
View
Price last confirmed 30 days ago
B
Retailer 14
-
€3,640 EUR
View
B
Retailer 15
-
€3,850 EUR
View
B
Retailer 16
-
€4,092 EUR
View
B
Retailer 17
-
€5,262 EUR
View
B
Retailer 18
-
€5,496 EUR
View
Most Expensive
B
Diamond Quarter
1.02SI1H1442F009N · Nov 5
€6,097 EUR
£5,360 GBP
View
18 more retailers have this diamond
Prices start from €2,280 EURSave up to €3,816 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.

A
1.02ct Round
€2,280 EUR