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Heart|Natural|GIA

0.90ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 6421900050

Certificate GIA 6421900050

Diamond specifications and retailer prices

From €438 EUR
SGD 662 SGD
As of October 31, 2026
Save €817 EUR (65%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €1,255 EUR at Diamond Heaven · As of October 28, 2026
View at Diamond Heaven

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6421900050. Listed at 4 retailers as of October 28, 2026, with prices from €438 to €1,255, a €817 spread on the same certified stone. Diamond Heaven lists it at €1,255. 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

0.90
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.81°
Pavilion angle44.61°
OriginNatural
Grading LabGIA
CertificateGIA 6421900050
Dimensions5.87 × 6.79 × 4.00 mm
L/W Ratio1.16
Top View
5.87 mm6.79 mm0.90 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421900050
Side View
Table 60.0%Crown 38.81°Girdle: MED-VTKPavilion 44.61°Culet: NoneDepth 59.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €1,255 EUR|Low: €438 EUR|High: €1,419 EUR|Avg: €896 EUR|-3.1%
Diamond Heaven
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 28, 2026
Retailer 3€438 EUR
Retailer 2€691 EUR
Retailer 4€713 EUR
Retailer 5€789 EUR
Retailer 6€961 EUR
Retailer 7€1,082 EUR
Diamond Heaven€1,255 EUR

11 data points across 7 retailers

4 retailers€438 EUR to €1,255 EUR

A
Cheapest Retailer
-
€438 EUR
SGD 662 SGD
A
Retailer 2
-
€691 EUR
$772 USD
View
A
Retailer 3
-
€713 EUR
$796 USD
View
Most Expensive
A
Diamond Heaven
0.900SI2D64505153S · Oct 28
€1,255 EUR
£1,104 GBP
View
3 more retailers have this diamond
Prices start from €438 EURSave up to €817 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
0.90ct Heart
€438 EUR