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Round|Lab Grown|GIA

5.09ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 2488088636

Certificate GIA 2488088636

Diamond specifications and retailer prices

From €1,352 EUR
$1,511 USD
As of October 26, 2026
Save €3,133 EUR (70%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,576 EUR at Brilliant Earth · As of October 10, 2026
View at Brilliant Earth

About this 5.09ct lab-grown round diamond

This 5.09ct lab-grown round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2488088636. Listed at 16 retailers as of October 26, 2026, with a 232% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.09
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 2488088636
Dimensions11.07 × 11.02 × 6.77 mm
L/W Ratio1.00
Star length45%
Top View
11.07 mm11.02 mm5.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2488088636
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: €5,576 EUR|Low: €1,298 EUR|High: €5,576 EUR|Avg: €2,375 EUR
Brilliant Earth
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
Retailer 17
October 31, 2026
Retailer 17€1,352 EUR
Retailer 7€1,472 EUR
Retailer 9€1,514 EUR
Retailer 8€1,568 EUR
Retailer 5€1,723 EUR
Retailer 11€1,799 EUR
Retailer 6€1,830 EUR
Retailer 3€2,040 EUR
Retailer 12€2,087 EUR
Retailer 13€2,168 EUR
Retailer 2€2,363 EUR
Retailer 16€2,472 EUR
Retailer 10€2,500 EUR
Retailer 15€2,793 EUR
Retailer 4€2,940 EUR
Retailer 14€4,486 EUR
Brilliant Earth€5,576 EUR

36 data points across 17 retailers

16 retailers€1,352 EUR to €4,486 EUR

B+
Cheapest Retailer
-
€1,352 EUR
$1,511 USD
Retailer 2
-
€1,472 EUR
$1,644 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
€1,568 EUR
$1,752 USD
View
B+
Retailer 4
-
€1,723 EUR
$1,925 USD
View
B+
Retailer 5
-
€1,799 EUR
HK$15,700 HKD
View
B+
Retailer 6
-
€1,830 EUR
$2,044 USD
View
B
Retailer 7
-
€2,040 EUR
$2,279 USD
View
B+
Retailer 8
-
€2,087 EUR
£1,836 GBP
View
B+
Retailer 9
-
€2,168 EUR
£1,907 GBP
View
B+
Retailer 10
-
€2,363 EUR
View
B
Retailer 11
-
€2,472 EUR
$2,762 USD
View
B
Retailer 12
-
€2,500 EUR
$2,793 USD
View
Retailer 13
-
€2,793 EUR
$3,120 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
€2,940 EUR
$3,285 USD
View
B
Retailer 15
-
€4,486 EUR
£3,946 GBP
View
Most Expensive
Brilliant Earth
14415260A · Oct 10
€5,576 EUR
$6,230 USD
View
Price last confirmed 21 days ago
15 more retailers have this diamond
Prices start from €1,352 EURSave up to €3,133 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+
5.09ct Round
€1,352 EUR