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1.66ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 5473122533

Certificate GIA 5473122533

Diamond specifications and retailer prices

From €1,302 EUR
$1,460 USD
As of November 2, 2026
Save €580 EUR (31%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €1,881 EUR at Jared · As of November 2, 2026
View at Jared

About this 1.66ct lab-grown round diamond

This 1.66ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5473122533. Listed at 3 retailers as of November 2, 2026, with prices from €1,302 to €1,881, a €580 spread on the same certified stone. Jared lists it at €1,881. 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

1.66
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41°
OriginLab Grown
Grading LabGIA
CertificateGIA 5473122533
Dimensions7.60 × 7.65 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.60 mm7.65 mm1.66 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5473122533
Side View
Table 57.0%Crown 34.5°Girdle: MediumPavilion 41°Culet: 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 2
Current: €1,881 EUR|Low: €1,302 EUR|High: €1,881 EUR|Avg: €1,552 EUR
Jared
Retailer 2
Retailer 3
July 2, 2026
Retailer 2€1,302 EUR
Retailer 3€1,302 EUR
Jared€1,881 EUR

9 data points across 3 retailers

3 retailers€1,302 EUR to €1,881 EUR

B
Cheapest Retailer
-
€1,302 EUR
$1,460 USD
B
Retailer 2
-
€1,302 EUR
$1,460 USD
View
Most Expensive
B
Jared
155398847 · Nov 2
€1,881 EUR
$2,110 USD
View
2 more retailers have this diamond
Prices start from €1,302 EURSave up to €580 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
1.66ct Round
€1,302 EUR