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Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1236370974

Certificate GIA 1236370974

Diamond specifications and retailer prices

From €2,280 EUR
HK$19,900 HKD
As of October 31, 2026
Save €2,980 EUR (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €5,260 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1236370974. Listed at 15 retailers as of October 30, 2026, with prices from €2,280 to €5,260, a €2,980 spread on the same certified stone. NZ Jewellers lists it at €5,260. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1236370974
Dimensions6.43 × 6.41 × 3.97 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Key to symbols
Crystal, Feather, Knot, Needle
Top View
6.43 mm6.41 mm1.02 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1236370974
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.9%

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: Oct 31
Current: €5,260 EUR|Low: €2,269 EUR|High: €5,260 EUR|Avg: €3,558 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 4€2,280 EUR
Retailer 8€2,680 EUR
Retailer 9€2,786 EUR
Retailer 3€2,914 EUR
Retailer 11€3,135 EUR
Retailer 5€3,136 EUR
Retailer 10€3,225 EUR
Retailer 6€3,536 EUR
Retailer 2€3,711 EUR
Retailer 7€5,076 EUR
NZ Jewellers€5,260 EUR

44 data points across 11 retailers

15 retailers€2,280 EUR to €5,260 EUR

A
Cheapest Retailer
-
€2,280 EUR
HK$19,900 HKD
A
Retailer 2
-
€2,680 EUR
$2,994 USD
View
A
Retailer 3
-
€2,786 EUR
$3,113 USD
View
Final sale: no returns
B+
Retailer 4
-
€2,914 EUR
$3,255 USD
View
B+
Retailer 5
-
€3,019 EUR
$3,373 USD
View
B+
Retailer 6
-
€3,019 EUR
$3,373 USD
View
B+
Retailer 7
-
€3,135 EUR
$3,502 USD
View
B+
Retailer 8
-
€3,136 EUR
£2,758 GBP
View
B+
Retailer 9
-
€3,148 EUR
$3,517 USD
View
Retailer 10
-
€3,225 EUR
A$5,543 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
€3,484 EUR
$3,892 USD
View
B+
Retailer 12
-
€3,536 EUR
View
B+
Retailer 13
-
€3,711 EUR
ZAR 66,973 ZAR
View
B
Retailer 14
-
€5,076 EUR
£4,465 GBP
View
Most Expensive
B
NZ Jewellers
c1f75fdc-853b-40e8-9dbe-3ee0c257e535 · Oct 30
€5,260 EUR
$5,876 USD
View
14 more retailers have this diamond
Prices start from €2,280 EURSave up to €2,980 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