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Round|Lab Grown|IGI

1.61ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG551274402

Shape and cutting style on the report: Round brilliant

Certificate IGI LG551274402

Diamond specifications and retailer prices

From $312 USD
As of November 1, 2026
Save $2,158 USD (87%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,470 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.61ct lab-grown round diamond

This 1.61ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551274402 or 551274402. Listed at 17 retailers as of November 1, 2026, with prices from $312 to $2,470, a $2,158 spread on the same certified stone. Do Amore Diamonds lists it at $2,470. 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

1.61
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551274402
Dimensions7.47 × 7.43 × 4.66 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
7.47 mm7.43 mm1.61 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551274402
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $676 USD|Low: $246 USD|High: $1,547 USD|Avg: $672 USD|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 9$312 USD
Retailer 8$345 USD
Retailer 2$386 USD
Retailer 6$505 USD
Retailer 7$571 USD
Retailer 10$611 USD
Retailer 1$676 USD
Retailer 4$785 USD
Retailer 5$1,061 USD
Retailer 3$1,528 USD

41 data points across 10 retailers

17 retailers$312 USD to $2,470 USD

Retailer 1
-
$267 USD
Price last confirmed 32 days ago
Retailer 2
-
$279 USD
View
Price last confirmed 41 days ago
A
Retailer 3
-
$312 USD
View
Final sale: no returns
Retailer 4
-
$323 USD
View
Price last confirmed 41 days ago
Retailer 5
-
$341 USD
View
Price last confirmed 42 days ago
Retailer 6
-
$345 USD
View
Price last confirmed 31 days ago
A
Retailer 7
-
$386 USD
View
A
Retailer 8
-
$505 USD
View
B+
Retailer 9
-
$571 USD
View
B+
Retailer 10
-
$611 USD
View
B+
Retailer 11
-
$676 USD
£533 GBP
View
Retailer 12
-
$785 USD
View
Price last confirmed 12 days ago
B
Retailer 13
-
$1,061 USD
View
Retailer 14
-
$1,226 USD
View
Price last confirmed 43 days ago
Retailer 15
-
$1,226 USD
View
Price last confirmed 26 days ago
B
Retailer 16
-
$1,528 USD
£1,203 GBP
View
Most Expensive
B
Do Amore Diamonds
27-ED0C343CA · Nov 2
$2,470 USD
View
16 more retailers have this diamond
Prices start from $312 USDSave up to $2,158 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
1.61ct Round
$312 USD