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Round|Lab Grown|IGI

1.00ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • IGI LG472170743

Shape and cutting style on the report: Round brilliant

Certificate IGI LG472170743

Diamond specifications and retailer prices

From $590 USD
As of October 29, 2026
Save $716 USD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,977 USD at Friendly Diamonds · As of October 28, 2026
View at Friendly Diamonds

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG472170743 or 472170743. Listed at 11 retailers as of October 28, 2026, with a 121% 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

1.00
Carat
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472170743
Dimensions6.39 × 6.34 × 3.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.39 mm6.34 mm1.00 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472170743
Side View
Table 58.0%Crown 34.4°Girdle: ThickPavilion 40°Culet: NoneDepth 61.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,977 USD|Low: $552 USD|High: $3,190 USD|Avg: $1,135 USD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 6$590 USD
Retailer 5$692 USD
Retailer 11$753 USD
Retailer 9$774 USD
Retailer 7$803 USD
Retailer 10$803 USD
Retailer 3$1,163 USD
Retailer 2$1,281 USD
Retailer 8$1,306 USD
Friendly Diamonds$1,977 USD
Retailer 4$3,169 USD

39 data points across 11 retailers

11 retailers$590 USD to $1,306 USD

B
Cheapest Retailer
-
$590 USD
B
Retailer 2
-
$692 USD
View
B
Retailer 3
-
$753 USD
View
B
Retailer 4
-
$774 USD
View
Final sale: no returns
B
Retailer 5
-
$803 USD
View
Retailer 6
-
$803 USD
View
Price last confirmed 13 days ago
B
Retailer 7
-
$1,281 USD
£1,009 GBP
View
B
Retailer 8
-
$1,306 USD
View
Most Expensive
Friendly Diamonds
1590671 · Oct 28
$1,977 USD
View
Price under review
8 more retailers have this diamond
Prices start from $590 USDSave up to $716 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
1.00ct Round
$590 USD