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Round|Lab Grown|IGI

4.28ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG695521718

Shape and cutting style on the report: Round brilliant

Certificate IGI LG695521718

Diamond specifications and retailer prices

From $587 USD
As of October 29, 2026
Save $4,623 USD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,210 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 4.28ct lab-grown round diamond

This 4.28ct 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 IGI LG695521718 or 695521718. Listed at 10 retailers as of October 29, 2026, with prices from $587 to $5,210, a $4,623 spread on the same certified stone. Do Amore Diamonds lists it at $5,210. 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

4.28
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG695521718
Dimensions10.38 × 10.34 × 6.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.38 mm10.34 mm4.28 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG695521718
Side View
Table 59.0%Crown 35.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $5,210 USD|Low: $503 USD|High: $5,530 USD|Avg: $2,136 USD|-5.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 28, 2026
Retailer 10$587 USD
Retailer 7$651 USD
Retailer 13$658 USD
Retailer 12$1,119 USD
Retailer 2$1,120 USD
Retailer 5$1,276 USD
Retailer 9$1,807 USD
Retailer 4$1,873 USD
Retailer 11$2,114 USD
Retailer 3$2,194 USD
Retailer 6$3,171 USD
Retailer 8$4,225 USD
Do Amore Diamonds$5,210 USD

23 data points across 13 retailers

10 retailers$587 USD to $5,210 USD

A
Cheapest Retailer
-
$587 USD
A
Retailer 2
-
$651 USD
View
A
Retailer 3
-
$658 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,119 USD
View
A
Retailer 5
-
$1,120 USD
View
B+
Retailer 6
-
$1,807 USD
View
B+
Retailer 7
-
$2,114 USD
View
B
Retailer 8
-
$3,171 USD
£2,497 GBP
View
Retailer 9
-
$4,225 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Do Amore Diamonds
27-7DE0CFD85 · Oct 29
$5,210 USD
View
9 more retailers have this diamond
Prices start from $587 USDSave up to $4,623 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.

A
4.28ct Round
$587 USD