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 $1,511 USD
As of October 26, 2026
Save $3,500 USD (70%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,230 USD 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 17 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: $6,230 USD|Low: $1,450 USD|High: $6,230 USD|Avg: $2,681 USD
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 29, 2026
Retailer 16$1,511 USD
Retailer 7$1,644 USD
Retailer 9$1,691 USD
Retailer 8$1,752 USD
Retailer 5$1,925 USD
Retailer 2$2,010 USD
Retailer 6$2,044 USD
Retailer 3$2,279 USD
Retailer 11$2,332 USD
Retailer 12$2,422 USD
Retailer 10$2,648 USD
Retailer 15$2,762 USD
Retailer 17$2,820 USD
Retailer 14$3,120 USD
Retailer 4$3,285 USD
Retailer 13$5,011 USD
Brilliant Earth$6,230 USD

36 data points across 17 retailers

17 retailers$1,511 USD to $5,011 USD

B+
Cheapest Retailer
-
$1,511 USD
B+
Retailer 2
-
$1,644 USD
View
B+
Retailer 3
-
$1,691 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,752 USD
View
B+
Retailer 5
-
$1,925 USD
View
B+
Retailer 6
-
$2,010 USD
HK$15,700 HKD
View
B+
Retailer 7
-
$2,044 USD
View
B+
Retailer 8
-
$2,279 USD
View
B+
Retailer 9
-
$2,332 USD
£1,836 GBP
View
B+
Retailer 10
-
$2,422 USD
£1,907 GBP
View
B+
Retailer 11
-
$2,648 USD
€2,522 EUR
View
B
Retailer 12
-
$2,762 USD
View
B
Retailer 13
-
$2,820 USD
View
Retailer 14
-
$3,120 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$3,285 USD
View
B
Retailer 16
-
$5,011 USD
£3,946 GBP
View
Most Expensive
Brilliant Earth
14415260A · Oct 10
$6,230 USD
View
Price last confirmed 19 days ago
16 more retailers have this diamond
Prices start from $1,511 USDSave up to $3,500 USD

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
$1,511 USD