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Round|Lab Grown|GCAL

2.57ct H SI1 Round Lab Grown Diamond

EX • H/SI1

Diamond specifications and retailer prices

From €358 EUR
$400 USD
As of October 30, 2026
Save €1,700 EUR (83%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €2,058 EUR at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 2.57ct lab-grown round diamond

This 2.57ct lab-grown round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL. Listed at 8 retailers as of October 30, 2026, with prices from €358 to €2,058, a €1,700 spread on the same certified stone. Diamond Exchange Canada lists it at €2,058. 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

2.57
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGCAL
Dimensions8.78 × 8.80 × 5.43 mm
L/W Ratio1.00
Top View
8.78 mm8.80 mm2.57 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCuletDepth 61.8%

Caratlytics Score

How it works →
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: Oct 30
Current: €2,058 EUR|Low: €287 EUR|High: €2,058 EUR|Avg: €796 EUR
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 20, 2026
Retailer 6€287 EUR
Retailer 5€352 EUR
Retailer 2€358 EUR
Retailer 3€383 EUR
Retailer 4€1,266 EUR
Diamond Exchange Canada€2,058 EUR

11 data points across 6 retailers

8 retailers€358 EUR to €2,058 EUR

Retailer 1
-
€287 EUR
$321 USD
Price last confirmed 40 days ago
Retailer 2
-
€334 EUR
$373 USD
View
Price last confirmed 38 days ago
Retailer 3
-
€352 EUR
$393 USD
View
Price last confirmed 40 days ago
B+
Retailer 4
-
€358 EUR
$400 USD
View
Retailer 5
-
€383 EUR
$428 USD
View
Price last confirmed 7 days ago
Retailer 6
-
€448 EUR
$501 USD
View
Price last confirmed 47 days ago
Retailer 7
-
€1,266 EUR
$1,414 USD
View
Price last confirmed 41 days ago
Most Expensive
B+
Diamond Exchange Canada
1986528133 · Oct 30
€2,058 EUR
CA$3,193 CAD
View
7 more retailers have this diamond
Prices start from €358 EURSave up to €1,700 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+
2.57ct Round
€358 EUR