Round|Lab Grown|GIA

3.09ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 2487357247

Certificate GIA 2487357247

Diamond specifications and retailer prices

From €1,210 EUR
As of November 5, 2026
Save €1,712 EUR (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €2,922 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2487357247. Listed at 5 retailers as of October 31, 2026, with prices from €1,210 to €2,922, a €1,712 spread on the same certified stone. Blue Nile lists it at €2,922. 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

3.09
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 2487357247
Dimensions9.41 × 9.39 × 5.72 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
9.41 mm9.39 mm3.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2487357247
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €2,922 EUR|Low: €1,056 EUR|High: €6,093 EUR|Avg: €2,491 EUR
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 29, 2026
Retailer 6€1,208 EUR
Retailer 10€1,210 EUR
Retailer 12€1,224 EUR
Retailer 2€1,317 EUR
Retailer 9€1,403 EUR
Retailer 15€1,416 EUR
Retailer 14€1,430 EUR
Retailer 13€1,516 EUR
Retailer 16€2,367 EUR
Retailer 11€2,631 EUR
Blue Nile€2,922 EUR
Retailer 5€3,442 EUR
Retailer 3€3,947 EUR
Retailer 8€3,947 EUR
Retailer 7€3,983 EUR
Retailer 4€6,093 EUR

10 data points across 16 retailers

5 retailers€1,210 EUR to €2,922 EUR

B+
Cheapest Retailer
-
€1,210 EUR
B+
Retailer 2
-
€1,317 EUR
View
B+
Retailer 3
-
€1,403 EUR
View
B
Retailer 4
-
€2,631 EUR
View
Most Expensive
B
Blue Nile
24787994 · Oct 31
€2,922 EUR
$3,280 USD
View
4 more retailers have this diamond
Prices start from €1,210 EURSave up to €1,712 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+
3.09ct Round
€1,210 EUR